Zobrazeno 1 - 10
of 316
pro vyhledávání: '"Koehl, Michael"'
We present a cooling method for a strongly-interacting trapped quantum gas. By applying a magnetic field modulation with frequencies close to the binding energy of a molecular bound state we selectively remove dimers with high kinetic energy from the
Externí odkaz:
http://arxiv.org/abs/2410.10642
Autor:
Klemmer, Nick, Fleper, Janek, Jonas, Valentin, Sheikhan, Ameneh, Kollath, Corinna, Köhl, Michael, Bergschneider, Andrea
We investigate the experimental control of pair tunneling in a double-well potential using Floquet engineering. We demonstrate a crossover from a regime with density-assisted tunneling to dominant pair tunneling by tuning the effective interactions.
Externí odkaz:
http://arxiv.org/abs/2404.08482
Publikováno v:
Phys. Rev. Lett. 133, 150403 (2024)
We study the Higgs mode of a strongly-interacting Fermi gas in the crossover regime between a fermionic and bosonic superfluid. By periodically modulating the interaction strength of the gas, we parametrically excite the Higgs mode and study its reso
Externí odkaz:
http://arxiv.org/abs/2401.14822
Publikováno v:
Phys. Rev. A 109, L011501 (2024)
Optical fiber Fabry-Perot cavities have been a development facilitating the efficient integration of high-finesse cavities into fiber-optic assemblies. In this work, we demonstrate coupling of two high-finesse fiber cavities by direct photon tunnelin
Externí odkaz:
http://arxiv.org/abs/2311.09647
Publikováno v:
Nature 589, 40(2021)
Fermionic atoms in optical lattices have served as a compelling model system to study and emulate the physics of strongly-correlated matter. Driven by the advances of high-resolution microscopy, the recent focus of research has been on two-dimensiona
Externí odkaz:
http://arxiv.org/abs/2310.18204
Random generation and confidential distribution of cryptographic keys are fundamental building blocks of secure communication. Using quantum states in which the transmitted quantum bit is entangled with a stationary memory quantum bit allows the secu
Externí odkaz:
http://arxiv.org/abs/2111.14523
Autor:
Pfeifer, Hannes, Ratschbacher, Lothar, Gallego, Jose, Saavedra, Carlos, Faßbender, Alexander, von Haaren, Andreas, Alt, Wolfgang, Hofferberth, Sebastian, Köhl, Michael, Linden, Stefan, Meschede, Dieter
Publikováno v:
Appl. Phys. B 128, 29 (2022)
Fabry-Perot interferometers have stimulated numerous scientific and technical applications ranging from high resolution spectroscopy over metrology, optical filters to interfaces of light and matter at the quantum limit and more. End facet machining
Externí odkaz:
http://arxiv.org/abs/2111.08533
We investigate the response to radio-frequency driving of an ultracold gas of attractively interacting fermions in a one-dimensional optical lattice. We study the system dynamics by monitoring the driving-induced population transfer to a third state,
Externí odkaz:
http://arxiv.org/abs/2109.00651
Autor:
Harrison, Timothy, Link, Martin, Behrle, Alexandra, Gao, Kuiyi, Kell, Andreas, Kombe, Johannes, Bernier, Jean-Sébastien, Kollath, Corinna, Köhl, Michael
Publikováno v:
Phys. Rev. Research 3, 023205 (2021)
We study experimentally and theoretically the response of a two-component Fermi condensate in the strongly-interacting regime to a quench of the interaction strength. The quench is realized using a radio-frequency $\pi$-pulse to a third internal leve
Externí odkaz:
http://arxiv.org/abs/2007.11466
The development of efficient network nodes is a key element for the realisation of quantum networks which promise great capabilities as distributed quantum computing or provable secure communication. We report the realisation of a quantum network nod
Externí odkaz:
http://arxiv.org/abs/2005.09124